.stylelintrc

{
  "rules": {
    "color-hex-case": "lower",
    "color-hex-length": "short",
    "color-no-invalid-hex": true,

    "font-family-name-quotes": "always-where-recommended",

    "font-weight-notation": "numeric",

    "function-calc-no-unspaced-operator": true,
    "function-comma-newline-after": "always-multi-line",
    "function-comma-newline-before": "never-multi-line",
    "function-comma-space-after": "always-single-line",
    "function-comma-space-before": "never",
    "function-linear-gradient-no-nonstandard-direction": true,
    "function-max-empty-lines": 0,
    "function-name-case": "lower",
    "function-parentheses-newline-inside": "always-multi-line",
    "function-parentheses-space-inside": "never",
    "function-url-data-uris": "never",
    "function-url-quotes": "never",
    "function-whitespace-after": "always",

    "number-leading-zero": "never",
    "number-max-precision": 4,
    "number-no-trailing-zeros": true,

    "string-no-newline": true,
    "string-quotes": "single",

    "length-zero-no-unit": true,

    "unit-case": "lower",
    "unit-no-unknown": true,

    "value-keyword-case": "lower",
    "value-no-vendor-prefix": true,

    "value-list-comma-newline-after": "always-multi-line",
    "value-list-comma-newline-before": "never-multi-line",
    "value-list-comma-space-after": "always-single-line",
    "value-list-comma-space-before": "never",
    "value-list-max-empty-lines": 0,

    "custom-property-empty-line-before": "never",

    "shorthand-property-no-redundant-values": true,

    "property-case": "lower",
    "property-no-unknown": true,
    "property-no-vendor-prefix": true,

    "keyframe-declaration-no-important": true,

    "declaration-bang-space-after": "never",
    "declaration-bang-space-before": "always",
    "declaration-colon-newline-after": "always-multi-line",
    "declaration-colon-space-after": "always-single-line",
    "declaration-colon-space-before": "never",
    "declaration-empty-line-before": "never",
    "declaration-no-important": true,
    "declaration-property-unit-whitelist": {
      "/^animation/": ["s"]
    },

    "declaration-block-no-duplicate-properties": true,
    "declaration-block-no-shorthand-property-overrides": true,
    "declaration-block-properties-order": [
        "position",
        "top",
        "right",
        "bottom",
        "left",
        "z-index",
        "display",
        "visibility",
        "flex",
        "flex-grow",
        "flex-shrink",
        "flex-basis",
        "flex-direction",
        "flex-flow",
        "flex-wrap",
        "align-content",
        "align-items",
        "align-self",
        "justify-content",
        "order",
        "float",
        "clear",
        "min-width",
        "min-height",
        "max-width",
        "max-height",
        "width",
        "height",
        "overflow",
        "overflow-x",
        "overflow-y",
        "clip",
        "clip-path",
        "box-sizing",
        "margin",
        "margin-top",
        "margin-right",
        "margin-bottom",
        "margin-left",
        "padding",
        "padding-top",
        "padding-right",
        "padding-bottom",
        "padding-left",
        "outline",
        "outline-width",
        "outline-style",
        "outline-color",
        "outline-offset",
        "border",
        "border-spacing",
        "border-collapse",
        "border-width",
        "border-style",
        "border-color",
        "border-top",
        "border-top-width",
        "border-top-style",
        "border-top-color",
        "border-right",
        "border-right-width",
        "border-right-style",
        "border-right-color",
        "border-bottom",
        "border-bottom-width",
        "border-bottom-style",
        "border-bottom-color",
        "border-left",
        "border-left-width",
        "border-left-style",
        "border-left-color",
        "border-radius",
        "border-top-left-radius",
        "border-top-right-radius",
        "border-bottom-right-radius",
        "border-bottom-left-radius",
        "border-image",
        "border-image-source",
        "border-image-slice",
        "border-image-width",
        "border-image-outset",
        "border-image-repeat",
        "border-top-image",
        "border-right-image",
        "border-bottom-image",
        "border-left-image",
        "border-corner-image",
        "border-top-left-image",
        "border-top-right-image",
        "border-bottom-right-image",
        "border-bottom-left-image",
        "background",
        "background-color",
        "background-image",
        "background-attachment",
        "background-position",
        "background-position-x",
        "background-position-y",
        "background-clip",
        "background-origin",
        "background-size",
        "background-repeat",
        "box-decoration-break",
        "box-shadow",
        "color",
        "table-layout",
        "caption-side",
        "empty-cells",
        "list-style",
        "list-style-position",
        "list-style-type",
        "list-style-image",
        "quotes",
        "content",
        "counter-increment",
        "counter-reset",
        "vertical-align",
        "text-align",
        "text-align-last",
        "text-decoration",
        "text-emphasis",
        "text-emphasis-position",
        "text-emphasis-style",
        "text-emphasis-color",
        "text-indent",
        "text-justify",
        "text-outline",
        "text-transform",
        "text-wrap",
        "text-overflow",
        "text-overflow-ellipsis",
        "text-overflow-mode",
        "text-shadow",
        "white-space",
        "word-spacing",
        "word-wrap",
        "word-break",
        "tab-size",
        "hyphens",
        "letter-spacing",
        "font",
        "font-weight",
        "font-style",
        "font-variant",
        "font-size-adjust",
        "font-stretch",
        "font-size",
        "font-family",
        "line-height",
        "opacity",
        "filter",
        "resize",
        "cursor",
        "nav-index",
        "nav-up",
        "nav-right",
        "nav-down",
        "nav-left",
        "transition",
        "transition-delay",
        "transition-timing-function",
        "transition-duration",
        "transition-property",
        "transform",
        "transform-origin",
        "animation",
        "animation-name",
        "animation-duration",
        "animation-play-state",
        "animation-timing-function",
        "animation-delay",
        "animation-iteration-count",
        "animation-direction",
        "animation-fill-mode",
        "pointer-events",
        "unicode-bidi",
        "direction",
        "columns",
        "column-span",
        "column-width",
        "column-count",
        "column-fill",
        "column-gap",
        "column-rule",
        "column-rule-width",
        "column-rule-style",
        "column-rule-color",
        "break-before",
        "break-inside",
        "break-after",
        "page-break-before",
        "page-break-inside",
        "page-break-after",
        "orphans",
        "widows",
        "zoom",
        "max-zoom",
        "min-zoom",
        "user-zoom",
        "orientation",
        "user-select",
        "fill",
        "stroke"
    ],
    "declaration-block-semicolon-newline-after": "always",
    "declaration-block-semicolon-newline-before": "never-multi-line",
    "declaration-block-semicolon-space-after": "always-single-line",
    "declaration-block-semicolon-space-before": "never",
    "declaration-block-single-line-max-declarations": 1,
    "declaration-block-trailing-semicolon": "always",

    "block-closing-brace-empty-line-before": "never",
    "block-closing-brace-newline-after": "always",
    "block-closing-brace-newline-before": "always",
    "block-no-empty": true,
    "block-opening-brace-newline-after": "always",
    "block-opening-brace-space-before": "always",

    "selector-attribute-brackets-space-inside": "never",
    "selector-attribute-operator-space-after": "never",
    "selector-attribute-operator-space-before": "never",
    "selector-attribute-quotes": "never",
    "selector-combinator-space-after": "always",
    "selector-combinator-space-before": "always",
    "selector-descendant-combinator-no-non-space": true,
    "selector-no-qualifying-type": true,
    "selector-no-vendor-prefix": true,
    "selector-pseudo-class-case": "lower",
    "selector-pseudo-class-no-unknown": true,
    "selector-pseudo-class-parentheses-space-inside": "never",
    "selector-pseudo-element-case": "lower",
    "selector-pseudo-element-colon-notation": "double",
    "selector-pseudo-element-no-unknown": true,
    "selector-type-case": "lower",
    "selector-type-no-unknown": [true, {
      "ignoreTypes": ["/^/", "custom-type"]
      }],
    "selector-max-empty-lines": 0,

    "selector-list-comma-newline-after": "always",
    "selector-list-comma-newline-before": "never-multi-line",
    "selector-list-comma-space-before": "never",
    
    "rule-empty-line-before": ["always", {
      "except": ["first-nested"]
      }],

    "media-feature-colon-space-after": "always",
    "media-feature-colon-space-before": "never",
    "media-feature-name-case": "lower",
    "media-feature-name-no-unknown": true,
    "media-feature-name-no-vendor-prefix": true,
    "media-feature-parentheses-space-inside": "never",
    "media-feature-range-operator-space-after": "always",
    "media-feature-range-operator-space-before": "always",

    "media-query-list-comma-newline-after": "always",
    "media-query-list-comma-newline-before": "never-multi-line",
    "media-query-list-comma-space-after": "always-single-line",
    "media-query-list-comma-space-before": "never",

    "at-rule-empty-line-before": "always",
    "at-rule-name-case": "lower",
    "at-rule-name-space-after": "always",
    "at-rule-no-unknown": [true, {
      "ignoreAtRules": ["each"]
      }],
    "at-rule-no-vendor-prefix": true,
    "at-rule-semicolon-newline-after": "always",

    "comment-no-empty": true,
    "comment-whitespace-inside": "always",

    "indentation": 2,
    "max-empty-lines": 1,
    "max-nesting-depth": 3,
    "no-duplicate-selectors": true,
    "no-empty-source": true,
    "no-eol-whitespace": true,
    "no-extra-semicolons": true,

    "no-invalid-double-slash-comments": true,
    "no-missing-end-of-source-newline": true,
    "no-unknown-animations": true
  }
}